Effect of the flame-retardant 3-hydroxyphenylphosphinyl-propanoic acid on the mechanical, thermal, and flammability properties of poly(ethylene terephthalate) nanofiber mats

2018 ◽  
Vol 31 (8) ◽  
pp. 919-927 ◽  
Author(s):  
Atiyeh Abbasi ◽  
Alireza Shakeri
Keyword(s):  
Thermal Stability ◽  
Flame Retardant ◽  
Ethylene Terephthalate ◽  
Chemical Reactivity ◽  
Attenuated Total Reflection ◽  
Propanoic Acid ◽  
Limiting Oxygen Index ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Nanofiber Mats

The structure, thermal stability, and mechanical properties of electrospun nanofiber mats obtained from poly(ethylene terephthalate) (PET) solutions in trifluoroacetic acid/dichloromethane were evaluated. The electrospun PET nanofibers were characterized by means of attenuated total reflection Fourier transform infrared spectroscopy, scanning electron microscopy, differential scanning calorimetry, thermogravimetric analysis, limiting oxygen index, and tensile testing. PET-3-hydroxyphenylphosphinyl-propanoic acid (HPP) copolymer was used as the flame-retardant (FR) agent to improve the thermal stability and flammability of the nanofiber mats. HPP is a commercial FR for polyesters which was studied from the viewpoint of chemical reactivity and reaction mechanism. To enhance the tensile strength of the nanofiber mats, the nanofibers were collected on high-speed rotating drum. The results showed that the nanofibers were oriented, and their strength was enhanced by increasing the velocity of the collector. The average diameter of electrospun nanofibers was in the range of 110–240 nm, decreasing with the increasing drum speed. Also the mean pore size of the mats decreased significantly with increasing orientation of the nanofibers. The results showed that HPP improved the flame retardancy of PET.

Preparation and Characterization of Flame Retardant PET Fiber via Melt Blending

2018 ◽  
Vol 913 ◽  
pp. 729-737
Author(s):  
Hui Ling Xu ◽  
Hong Kun Bao ◽  
Chao Sheng Wang ◽  
Hua Ping Wang
Keyword(s):  
Flame Retardant ◽  
Ethylene Terephthalate ◽  
Carbon Layer ◽  
Melt Blending ◽  
Fiber Fracture ◽  
Limiting Oxygen Index ◽  
Poly Ethylene Terephthalate ◽  
Blending Method ◽  
Poly Ethylene

Poly(ethylene terephthalate) (PET) fiber with excellent flame retardant property was prepared with introducing a containing phosphorus flame retardant 10-(2’,5’-dihydroxyphenyl) -9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (ODOPB) into PET by melt blending method. The intrinsic viscosity of the modified PET was decreased after melt blending, indicated that ODOPB could promote the degradation of PET. The addition of ODOPB can increase the amount of carbon residue of PET, which can effectively reduce the heat transfer. The movement and regularity of PET molecular chain are affected by ODOPB, resulting in the reducing of the crystallization of PET. The Raman curves indicate that the addition of ODOPB can improve the regularity of carbon layer, which is conducive to achieve the effect of flame retardant. When the mass fraction of P is 0.7 %, the limiting oxygen index of sample reaches 32.4% and UL-94 vertical reaches V-2, the fiber fracture strength is 2.6 cN/dtex, which has excellent flame retardant and mechanical properties.

scholarly journals Construction of Carbon Microspheres-Based Silane Melamine Phosphate Hybrids for Flame Retardant Poly(ethylene Terephthalate)

Polymers ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 545 ◽  
Author(s):  
Baoxia Xue ◽  
Ruihong Qin ◽  
Jie Wang ◽  
Mei Niu ◽  
Yongzhen Yang ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Ethylene Terephthalate ◽  
Hydrothermal Reaction ◽  
Reaction System ◽  
Fire Risk ◽  
Carbon Microspheres ◽  
Limiting Oxygen Index ◽  
Melamine Phosphate ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

To improve the flame retardancy and inhibit the smoke of poly(ethylene terephthalate) (PET), carbon microspheres (CMSs)-based melamine phosphate (MP) hybrids (MP-CMSs) were constructed in situ with the introduction of CMSs into the hydrothermal reaction system of MP. The integrated MP-CMSs were modified by 3-Aminopropyltriethoxysilane (APTS) to obtain the silane MP-CMSs (SiMP-CMSs) to strengthen the interface binding between the MP-CMSs and PET matrix. The results showed that the SiMP layer was loaded on the CMSs surface. The addition of only 3% SiMP-CMSs increased the limiting oxygen index (LOI) value of the PET from 21% ± 0.1% to 27.7% ± 0.3%, reaching a V-0 burning rate. The SiMP-CMSs not only reduced heat damage, but also inhibited the smoke release during PET combustion, whereupon the peak heat release rate (pk-HRR) reduced from 513.2 to 221.7 kW/m2, and the smoke parameters (SP) decreased from 229830.2 to 81892.3 kW/kg. The fire performance index (FPI) rose from 0.07 m2s/kW to 0.17 m2s/kW, demonstrating the lower fire risk. The proportion of the flame-retardant mode in the physical barrier, flame inhibition, and char effects were recorded as 44.53%, 19.04%, and 9.04%, respectively.

Immobilization of trypsin onto poly(ethylene terephthalate)/poly(lactic acid) nonwoven nanofiber mats

2015 ◽  
Vol 104 ◽  
pp. 48-56 ◽  
Author(s):  
Teresa R. Silva ◽  
Daniela P. Rodrigues ◽  
Jorge M.S. Rocha ◽  
M. Helena Gil ◽  
Susana C.S. Pinto ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Ethylene Terephthalate ◽  
Poly Lactic Acid ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Nanofiber Mats

Thermal stability of surfactants with amino and imido groups in poly(ethylene terephthalate)/clay composites

2008 ◽  
Vol 109 (6) ◽  
pp. 4112-4120 ◽  
Author(s):  
Xuepei Yuan ◽  
Chuncheng Li ◽  
Guohu Guan ◽  
Yaonan Xiao ◽  
Dong Zhang
Keyword(s):  
Thermal Stability ◽  
Ethylene Terephthalate ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Thermal Stability Of

Polyurethane resin derived from polyol of palm olein and recycled poly(ethylene terephthalate)

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Abbas Ahmad Adamu ◽  
Norazilawati Muhamad Sarih ◽  
Seng Neon Gan
Keyword(s):  
Thermal Stability ◽  
Palm Olein ◽  
Ethylene Terephthalate ◽  
Alkali Resistance ◽  
Pet Waste ◽  
Content Type ◽  
Pet Bottles ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Excellent Adhesion

Purpose Poly(ethylene terephthalate) (PET) waste from soft drink bottles was incorporated into palm olein alkyd to produce new polyol for use in polyurethane resins as surface protection on metal surfaces. Design/methodology/approach Alkyd was prepared from palm olein, glycerol and phthalic anhydride. PET underwent simultaneous glycolysis and transesterification reactions with the alkyd. Varying the amount of PET has led to polyols with different viscosities. Polyurethane resins were produced by reacting the polyols with toluene diisocyanate. The resins were coated on mild steel panels and cured. Performances of the cured films were tested. Findings The polyurethanes (PU) resin cured to a harder film with better thermal stability. Films showed excellent adhesion properties, while higher content of PET exhibited higher pencil hardness, better water, salt, acid and alkali resistance. Research limitations/implications Other vegetable oils could also be used. The alkyd structure could be changed by formulation to have different functionality and the ability to incorporate higher amount of PET waste. Rate of glycolysis of PET could be increased by higher amount of ethylene glycol. Practical implications This method has managed to use waste PET in producing new polyol and PU resins. The cured films exhibit good mechanical and chemical properties, as well as excellent adhesion and thermal stability. Social implications The non-biodegradable PET has created environmental pollution problems connected to littering and illegal landfilling. It has become necessary to pay greater attention to recycling PET bottles for obtaining valuable products. Originality/value This approach is different from the earlier reports, where PET was recycled to recover the raw materials.

scholarly journals Novel Oligo-Ester-Ether-Diol Prepared by Waste Poly(ethylene terephthalate) Glycolysis and Its Use in Preparing Thermally Stable and Flame Retardant Polyurethane Foam

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 236 ◽  
Author(s):  
Cuong N. Hoang ◽  
Chi T. Pham ◽  
Thu M. Dang ◽  
DongQuy Hoang ◽  
Pyoung-Chan Lee ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Polyurethane Foam ◽  
Flame Retardancy ◽  
Ethylene Terephthalate ◽  
Recycled Pet ◽  
Pet Bottles ◽  
Poly Ethylene Terephthalate ◽  
Ul 94 ◽  
Poly Ethylene ◽  
Fire Properties

Rigid polyurethane foam (PUF) was successfully prepared from a novel oligo-ester-ether-diol obtained from the glycolysis of waste poly(ethylene terephthalate) (PET) bottles via reaction with diethylene glycol (DEG) in the presence of ZnSO4 7H2O. The LC-MS analysis of the oligodiol enabled us to identify 67 chemical homologous structures that were composed of zero to four terephthalate (T) ester units and two to twelve monoethylene glycol (M) ether units. The flame retardant, morphological, compression, and thermal properties of rigid PUFs with and without triphenyl phosphate (TPP) were determined. The Tg values showed that TPP played a role of not only being a flame retardant, but also a plasticizer. PUF with a rather low TPP loading had an excellent flame retardancy and high thermal stability. A loading of 10 wt % TPP not only achieved a UL-94 V-0 rating, but also obtained an LOI value of 21%. Meanwhile, the PUF without a flame retardant did not achieve a UL-94 HB rating; the sample completely burned to the holder clamp and yielded a low LOI value (17%). The fire properties measured with the cone calorimeter were also discussed, and the results further proved that the flame retardancy of the PUF with the addition of TPP was improved significantly. The polymeric material meets the demands of density and compression strength for commercial PUF, as well as the needs of environmental development. The current study may help overcome the drawback of intrinsic high flammability and enlarge the fire safety applications of materials with a high percentage of recycled PET.

Sign in / Sign up

Export Citation Format

Share Document